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Step Drill Bit, HSS, 12 Sizes, 3/16-7/8 In.
- Item # 6A922
- Mfr. Model # UNIBIT 4
- NSN # 5133-01-372-2312
- UNSPSC # 27112801
- Catalog Page # 993
- Shipping Weight 0.2 lbs.
- ItemStep Drill Bit
- MaterialHigh Speed Steel
- Number of Hole Sizes12
- Shank Size3/8"
- Step Thickness1/16"
- Size Range3/16" to 7/8"
- Sizes Included3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"
- Number of Flutes1
- Shank TypeHex
- Bit Length3-1/4"
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Ask your questions. Share your answers.
For a glass block, you are going to want to use a drill bit that is specified as a glass / ceramic drill bit, such as 3AEE2.
One thing I can tell you from experience, you will want the glass you are drilling to be under water if at all possible. That way you will keep the drill bit cool and lubricated (both are very important), and if you accidentally shatter the glass you are drilling, then the shards won't fly everywhere.
Also, take your time.
Glass and ceramic drill bits use an abrasive to rub their way through the work, as opposed to cutting, like traditional drill bits do, so they are more susceptible to heat build up.
Grainger is neither responsible for, not does it endorse, the content of any statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger.